Laser etching a stack of thin layers for a connection of a photovoltaic cell
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United States of America Patent
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Aug 18, 2015
Grant Date -
Mar 26, 2015
app pub date -
Jan 28, 2013
filing date -
May 3, 2012
priority date (Note) -
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Abstract
A treatment of thin layers for forming a connection of a photovoltaic cell including the thin layers, which includes a first layer, having photovoltaic properties, deposited on a second layer, and the second layer, which is a metal contact layer, deposited on a substrate, the treatment including etching, in the first layer, at least one first trench having a first width so as to expose the second layer; and etching, in the first trench, a second trench so as to expose the substrate, the second trench having a second width less than the first width.
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